bool CAESinkALSA::Initialize(AEAudioFormat &format, std::string &device)
{
CAEChannelInfo channelLayout;
m_initDevice = device;
m_initFormat = format;
/* if we are raw, correct the data format */
if (AE_IS_RAW(format.m_dataFormat))
{
channelLayout = GetChannelLayout(format);
format.m_dataFormat = AE_FMT_S16NE;
m_passthrough = true;
}
else
{
channelLayout = GetChannelLayout(format);
m_passthrough = false;
}
#if defined(HAS_LIBAMCODEC)
if (aml_present())
{
aml_set_audio_passthrough(m_passthrough);
device = "default";
}
#endif
if (channelLayout.Count() == 0)
{
CLog::Log(LOGERROR, "CAESinkALSA::Initialize - Unable to open the requested channel layout");
return false;
}
format.m_channelLayout = channelLayout;
AEDeviceType devType = AEDeviceTypeFromName(device);
std::string AESParams;
/* digital interfaces should have AESx set, though in practice most
* receivers don't care */
if (m_passthrough || devType == AE_DEVTYPE_HDMI || devType == AE_DEVTYPE_IEC958)
GetAESParams(format, AESParams);
CLog::Log(LOGINFO, "CAESinkALSA::Initialize - Attempting to open device \"%s\"", device.c_str());
/* get the sound config */
snd_config_t *config;
snd_config_copy(&config, snd_config);
if (!OpenPCMDevice(device, AESParams, channelLayout.Count(), &m_pcm, config))
{
CLog::Log(LOGERROR, "CAESinkALSA::Initialize - failed to initialize device \"%s\"", device.c_str());
snd_config_delete(config);
return false;
}
/* get the actual device name that was used */
device = snd_pcm_name(m_pcm);
m_device = device;
CLog::Log(LOGINFO, "CAESinkALSA::Initialize - Opened device \"%s\"", device.c_str());
/* free the sound config */
snd_config_delete(config);
if (!InitializeHW(format) || !InitializeSW(format))
return false;
// we want it blocking
snd_pcm_nonblock(m_pcm, 0);
snd_pcm_prepare (m_pcm);
m_format = format;
m_formatSampleRateMul = 1.0 / (double)m_format.m_sampleRate;
return true;
}
bool CAESinkALSA::Initialize(AEAudioFormat &format, std::string &device)
{
m_initDevice = device;
m_initFormat = format;
/* if we are raw, correct the data format */
if (AE_IS_RAW(format.m_dataFormat))
{
m_channelLayout = GetChannelLayout(format);
format.m_dataFormat = AE_FMT_S16NE;
m_passthrough = true;
}
else
{
m_channelLayout = GetChannelLayout(format);
m_passthrough = false;
}
if (m_channelLayout.Count() == 0)
{
CLog::Log(LOGERROR, "CAESinkALSA::Initialize - Unable to open the requested channel layout");
return false;
}
format.m_channelLayout = m_channelLayout;
AEDeviceType devType = AEDeviceTypeFromName(device);
std::string AESParams;
/* digital interfaces should have AESx set, though in practice most
* receivers don't care */
if (m_passthrough || devType == AE_DEVTYPE_HDMI || devType == AE_DEVTYPE_IEC958)
GetAESParams(format, AESParams);
CLog::Log(LOGINFO, "CAESinkALSA::Initialize - Attempting to open device \"%s\"", device.c_str());
/* get the sound config */
snd_config_t *config;
snd_config_copy(&config, snd_config);
snd_config_t *dmixRateConf;
long dmixRate;
if (snd_config_search(config, "defaults.pcm.dmix.rate", &dmixRateConf) < 0
|| snd_config_get_integer(dmixRateConf, &dmixRate) < 0)
dmixRate = 48000; /* assume default */
/* Prefer dmix for non-passthrough stereo when sample rate matches */
if (!OpenPCMDevice(device, AESParams, m_channelLayout.Count(), &m_pcm, config, format.m_sampleRate == dmixRate && !m_passthrough))
{
CLog::Log(LOGERROR, "CAESinkALSA::Initialize - failed to initialize device \"%s\"", device.c_str());
snd_config_delete(config);
return false;
}
/* get the actual device name that was used */
device = snd_pcm_name(m_pcm);
m_device = device;
CLog::Log(LOGINFO, "CAESinkALSA::Initialize - Opened device \"%s\"", device.c_str());
/* free the sound config */
snd_config_delete(config);
if (!InitializeHW(format) || !InitializeSW(format))
return false;
snd_pcm_nonblock(m_pcm, 1);
snd_pcm_prepare (m_pcm);
m_format = format;
m_formatSampleRateMul = 1.0 / (double)m_format.m_sampleRate;
return true;
}
